Strap extension device



FIG. 1 is a front elevation view of my new design for a strap extension device;

FIG. 2 is a top plan view of FIG. 1;

FIG. 3 is a bottom plan view of FIG. 1;

FIG. 4 is a right side elevation view of FIG. 1, a left side elevation view being identical;

FIG. 5 is a front and right side perspective view of the design shown in use.

FIG. 6 is a front elevation view of another embodiment of my new design for a strap extension device;

FIG. 7 is a top plan view of FIG. 6;

FIG. 8 is a bottom plan view of FIG. 6;

FIG. 9 is a right side elevation view of FIG. 6, a left side elevation view being identical; and,

FIG. 10 is a front and right side perspective view thereof.

The broken lines shown in the drawings illustrate environment and form no part of the claimed design. 

The ornamental design for a strap extension device, as shown and described. 